Nitrite reduction over Pd supported CNFs: Metal particle size effect on selectivity

J.K. Chinthaginjala; A. Villa; D.S. Su; B.L. Mojet; L. Lefferts

doi:10.1016/j.cattod.2011.11.003

Nitrite reduction over Pd supported CNFs: Metal particle size effect on selectivity

J.K. Chinthaginjala, A. Villa, D.S. Su, B.L. Mojet, L. Lefferts^*

^*Corresponding author for this work

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Abstract

Pd catalysts supported on carbon-nano-fibers (CNFs) were synthesized via Pd colloids stabilized with polyvinyl-alcohol (PVA). Pd catalysts with narrow particle size distributions and mean Pd sizes between 2.6 and 30 nm were immobilized on CNFs. Characterization with CO-chemisorption and transmission electron microscopy (TEM) revealed that a significant part of the Pd surface is blocked by the polymer layer on the Pd particles. The prepared catalysts were tested for nitrite reduction in water, resulting in formation of nitrogen and ammonia. Turn over frequencies were found to be independent of Pd particle size while selectivity to ammonia clearly decreased with increasing Pd particle size

Original language	English
Pages (from-to)	119-123
Journal	Catalysis today
Volume	183
Issue number	1
DOIs	https://doi.org/10.1016/j.cattod.2011.11.003
Publication status	Published - 2012

Keywords

Physical chemistry

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10.1016/j.cattod.2011.11.003

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title = "Nitrite reduction over Pd supported CNFs: Metal particle size effect on selectivity",

abstract = "Pd catalysts supported on carbon-nano-fibers (CNFs) were synthesized via Pd colloids stabilized with polyvinyl-alcohol (PVA). Pd catalysts with narrow particle size distributions and mean Pd sizes between 2.6 and 30 nm were immobilized on CNFs. Characterization with CO-chemisorption and transmission electron microscopy (TEM) revealed that a significant part of the Pd surface is blocked by the polymer layer on the Pd particles. The prepared catalysts were tested for nitrite reduction in water, resulting in formation of nitrogen and ammonia. Turn over frequencies were found to be independent of Pd particle size while selectivity to ammonia clearly decreased with increasing Pd particle size",

keywords = "Physical chemistry",

author = "J.K. Chinthaginjala and A. Villa and D.S. Su and B.L. Mojet and L. Lefferts",

year = "2012",

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T1 - Nitrite reduction over Pd supported CNFs: Metal particle size effect on selectivity

AU - Chinthaginjala, J.K.

AU - Villa, A.

AU - Su, D.S.

AU - Mojet, B.L.

AU - Lefferts, L.

PY - 2012

Y1 - 2012

N2 - Pd catalysts supported on carbon-nano-fibers (CNFs) were synthesized via Pd colloids stabilized with polyvinyl-alcohol (PVA). Pd catalysts with narrow particle size distributions and mean Pd sizes between 2.6 and 30 nm were immobilized on CNFs. Characterization with CO-chemisorption and transmission electron microscopy (TEM) revealed that a significant part of the Pd surface is blocked by the polymer layer on the Pd particles. The prepared catalysts were tested for nitrite reduction in water, resulting in formation of nitrogen and ammonia. Turn over frequencies were found to be independent of Pd particle size while selectivity to ammonia clearly decreased with increasing Pd particle size

AB - Pd catalysts supported on carbon-nano-fibers (CNFs) were synthesized via Pd colloids stabilized with polyvinyl-alcohol (PVA). Pd catalysts with narrow particle size distributions and mean Pd sizes between 2.6 and 30 nm were immobilized on CNFs. Characterization with CO-chemisorption and transmission electron microscopy (TEM) revealed that a significant part of the Pd surface is blocked by the polymer layer on the Pd particles. The prepared catalysts were tested for nitrite reduction in water, resulting in formation of nitrogen and ammonia. Turn over frequencies were found to be independent of Pd particle size while selectivity to ammonia clearly decreased with increasing Pd particle size

KW - Physical chemistry

U2 - 10.1016/j.cattod.2011.11.003

DO - 10.1016/j.cattod.2011.11.003

M3 - Article

SN - 0920-5861

VL - 183

SP - 119

EP - 123

JO - Catalysis today

JF - Catalysis today

IS - 1

ER -

Nitrite reduction over Pd supported CNFs: Metal particle size effect on selectivity

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